If you’re interested in mashups, try this new site: http://www.stickymap.com
We developed Stickymap to make an interesting use of graphical overlays as well as a wiki-style interface so that you can get a good sense of what’s going on in a well-markered city.
Right now, I think the northeast has a good amount of markers. I invite you all to post areas in your neighborhood, or areas that you’ve visited or know about.
